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Table 4 Multiple linear regression using frailty status, baseline ADL, length of stay and principal diagnosis, as the independent variables for the ADL changes between admission and discharge

From: Association of frailty and functional recovery in an Acute Care for Elders unit: a prospective observational study

Variable Unstandardized coefficients B 95% CI P-value
Age, years 0.01 -0.5 to 0.5 0.96
Sex (male vs female) -0.1 -7.9 to 7.8 0.98
CCI 1.9 -0.2 to 4.1 0.08
ADL before admission -0.1 -0.3 to 0.04 0.13
Length of stay, days -0.2 -0.8 to 0.5 0.58
Frailty status
 Prefrail vs robust 8.6 -0.5 to 17.8 0.06
 Frail vs robust 12.6 1.7 to 23.6 0.03
Principal diagnosis
 Urinary tract infection vs other diagnosesa -0.3 -8.4 to 7.9 0.95
 Pneumonia vs other diagnosesa -2.9 -15.4 to 9.6 0.65
 Gastric ulcer vs other diagnosesa 4.5 -8.8 to 17.9 0.50
  1. Note. ADL Activities of daily living, CI Confidence interval, CCI Charlson Comorbidity Index (range, 0–37)
  2. aPatients with other diagnoses referred to all patients excluding those with the three most common principal diagnoses (urinary tract infection, pneumonia and gastric ulcer)